He blogs at 2020 Science and tweets as @2020science.
Timeline - Chemical Scientific Discovery. The Timeline is a visual exploration of key events in the history of science with particular emphasis on chemistry created by artist Murray Robertson.

Individual items are illustrated and linked to further information on each subject. The timeline is an evolving project and continues to expand, encompassing a wide range of subjects with relevance to general and scientific knowledge. Visit the Timeline website to see many more images and suggest your own entries. Chemsoc timeline. Ask a Scientist Index Directory. Lune. A lune is a plane figure bounded by two circular arcs of unequal radii, i.e., a crescent.

(By contrast, a plane figure bounded by two circular arcs of equal radius is known as a lens.) For circles of radius and whose centers are separated by a distance , the area of the lune is given by where is the area of the triangle with side lengths. Biochem4schools: Search by topic. Visual Calculus. Algorithm Tutorials. Have we found the universe that existed before the Big Bang?
First of all, let me say that this is not a comment on the overall article, but a small portion of it included below.

I stopped reading at the line "it's not clear whether one can even use the term "before" in reference to a pre-Big-Bang cosmos, as time itself may not have existed yet"
Quantum Physics: David Bohm. Bohmian Wave Mechanics, Holographic Universe, Bohm Biography. Introductory Quotes to David Bohm's Holographic Universe It is proposed that the widespread and pervasive distinctions between people (race, nation, family, profession, etc., etc.) which are now preventing mankind from working together for the common good, and indeed, even for survival, have one of the key factors of their origin in a kind of thought that treats things as inherently divided, disconnected, and "broken up" into yet smaller constituent parts.

Each part is considered to be essentially independent and self-existent. (David Bohm, Wholeness and the Implicate Order) The notion that all these fragments is separately existent is evidently an illusion, and this illusion cannot do other than lead to endless conflict and confusion. Indeed, the attempt to live according to the notion that the fragments are really separate is, in essence, what has led to the growing series of extremely urgent crises that is confronting us today.

A Very Brief Introduction. Robert Lanza, M.D.: Does the Past Exist Yet? Evidence Suggests Your Past Isn&#039;t Set in Stone. Recent discoveries require us to rethink our understanding of history.

The History of Mathematics - BBC doc (part1)
The Secret Life of Chaos Part (1 - 6)
DNA Interactive. Traits of Life: Exhibits. Protein Data Bank. A Structural View of Biology This resource is powered by the Protein Data Bank archive-information about the 3D shapes of proteins, nucleic acids, and complex assemblies that helps students and researchers understand all aspects of biomedicine and agriculture, from protein synthesis to health and disease.

Top 10 Amazing Biology Videos. Cyborgs, stem cells, glowing mice, and hilarious music videos are great reasons to be excited about biology.

Here are some of our favorite clips from the life sciences. 10. Immune Cell Chasing a BacteriumIt may look like the predecessor to Pac Man, but this vintage clip shows a neutrophil wending its way through a crowd of red blood cells to destroy its bacterial nemesis. 9.
Plus Magazine. Physicsworld.com. Early stress alters epigenome. Scientists have figured out how stress experienced early in life can cause long-lasting changes in physiology and behavior -- via epigenetics.

Image: Max-Planck Institute of Psychiatry, MunichSpecifically, early stress appears to induce epigenetic changes in a specific regulatory region of the genome, affecting the expression of a hormone important in controlling mood and cognition into adulthood, according to a study published online today (November 8) in Nature Neuroscience. This is the fi Scientists have figured out how stress experienced early in life can cause long-lasting changes in physiology and behavior -- via epigenetics.

Everywhere in a Flash: The Quantum Physics of Photosynthesis. By hitting single molecules with quadrillionth-of-a-second laser pulses, scientists have revealed the quantum physics underlying photosynthesis, the process used by plants and bacteria to capture light’s energy at efficiencies unapproached by human engineers.

The quantum wizardry appears to occur in each of a photosynthetic cell’s millions of antenna proteins. These route energy from electrons spinning in photon-sensitive molecules to nearby reaction-center proteins, which convert it to cell-driving charges. Almost no energy is lost in between.
WorldWide Telescope.